User's Manual Part 1

AT Commands 47
P/N 90023363 Revision 1.8
Table 5: Call Control Features AT Commands below, lists by function, the AT Commands
specific to accessing and troubleshooting the call control features used on Merlin
modems.
This list does not include commands used for calibration.
Table 5: Call Control Features AT Commands
Call Control AT
Command
Reference ETSI 07.07 Response
AT+CACM
Accumulated call meter (ACM) reset of
query
ACCUMULATED CALL METER
AT+CAMM
Accumulated call meter maximum (acm-
max) set or query
ACCUMULATED CALL METER
MAXIMUM
AT+CAOC
Advice of charge ADVICE OF CHARGE
AT+CBST
Select bearer service type BEARER SERVICE TYPE
AT+CCFC
Call forwarding number and conditions
control
CALL FORWARDING
AT+CCUG
Closed user group control CLOSED USER GROUP
AT+CCWA
Call waiting control CALL WAITING
AT+CEER
Extended error report EXTENDED ERROR REPORT
AT+CGMI
Request manufacturer identification MANUFACTURER IDENTIFI-
CATION
AT+CGMM
Request model identification MODEL IDENTIFICATION
AT+CGMR
Request revision identification REVISION IDENTIFICATION
AT+CGSN
Request product serial number identifica-
tion (identical with +gsn)
SERIAL NUMBER IDENTIFI-
CATION
AT+CGOI
Global Identity Request Identifier of device type.
AT+CSCS
Select TE character set TE CHARACTER SET
AT+CSSN
Enables presentation of supplementary
service notification result codes
SUPPLEMENTARY SERVICE
NOTIFICATION
AT+CSTA
Select type of address SELECT TYPE OF ADDRESS
AT+CHLD
Call hold and multiparty CALL HOLD AND MULTI-
PARTY
AT+CIMI
Request international mobile subscriber
identityI
INTERNATIONAL MOBILE
SUBSCRIBER IDENTITY